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Low‐ringing and reduced‐cost step recovery diode based UWB pulse generators for GPR applications
Author(s) -
Kamal Athar,
Bhattacharya Amitabha,
Tamrakar Maruti,
Roy Chayan
Publication year - 2014
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.28581
Subject(s) - ringing , microwave , bandwidth (computing) , resistive touchscreen , electronic circuit , materials science , diode , electronic engineering , attenuator (electronics) , electrical engineering , computer science , optoelectronics , optics , engineering , physics , telecommunications , filter (signal processing) , attenuation
Low‐ringing and reduced‐cost pulse generators for ultrawideband applications using step recovery diode (SRD) have been reported in this article. The circuits generate Gaussian pulses of 170 ps pulse width and a minimal ringing of −22 dB and monocycles of 401 ps duration and high fractional bandwidth of 162%. Cost‐reduction is mainly attributed to the resistive attenuator and single SRD used. Negligible change in circuits' performance was witnessed for repetition rate from 1 to 100 MHz which makes it apt for low to medium range ground penetrating radar applications. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2289–2294, 2014